Inkstand.



J. W. JAGOBUS.

INKSTAND.

APPLICATION FILED APE.24, 1912.

Patented Dec. 23, 1913.

m a v an fi Z NOGRAPH CO.,WA5IIINIJTON u c UNITED STATES PATENT OFFICE.

JAMES W. JACOBUS, OF GREAT NECK, NEW YORK, ASSIGNOR TO THE JAGOBUS PNEU- MATIC INKWELL COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

INKSTAND.

Specification of Letters Patent.

Application filed April 24, 1912.

To all whom it may concern:

Be it known that I, JAMES W. JAooBUs, a citizen of the United States, and resident of Great Neck, in the county of Nassau and State of New York have invented certain new and useful Improvements in Inkstands, of which the following is a specification.

My invention relates particularly to inkstands for use for instance on a table or desk.

The object is to provide a construction op erating on the pneumatic principle which can be made economically and which will hold a considerable quantity of ink and which will always be ready for use, which will limit the dip of the pen and which will not overflow upon changes of temperature.

In its preferred form the invention con sists in a base member having a vertical flange and an upper member having a vertical flange fitting within the flange of the base member and preferably permanently cemented therein by a liquid and air-tight joint. The base member has a dip passage at one side and a recess in the bottom constituting the lower end of the dip passage on a level somewhat below the level of the rest of the floor of the base member. The upper member has a notch in one side and the edge is inclined to form a part of the dip tube. The upper member is divided into two parts or chambers by means of a depending partition which extends nearly to the floor of the base member.

Figure l, is a vertical longitudinally sectional view of an inkstand embodying the improvements of my invention. Fig. 2, is a plan view of the base member. Fig. 3, is a view of the under side of the upper member. Fig. 4, is a front view of the upper member.

The base member 1 is adapted to rest on a table, desk or other suitable support. The upper member 2 fits within the base member and the joint 3 is preferably cemented. This joint for the purpose of making a good fit is preferably a slightly tapered ground joint. The front of the base member is provided with a groove 4 forming part of the dip tube which terminates in a recess 5 at the bottom somewhat below the level of the floor 6 of the base member. The upper member 2 has a notch 7 in its lower edge at the front and the wall of the upper member is preferably inclined inward leading to the edge 8 of the notch 7 thus forming a part of the dip tube for the pen. The upper member is divided by means of a partition 9 into two chambers 10 and 11 which are open only at the bottom. The lower edge of the partition 9 preferably extends downward to a level slightly below the level of the upper edge 8 of the notch 7.

The stand is filled by tilting it up on edge and pouring the ink into the dip tube. The ink flows through the notch 7 and beneath the partition 9 until it fills or nearly fills the chamber 10. If the filling is continued the chamber 11 will also be filled or partially filled. lVhen the stand is tipped back to its normal position if there is an ink in the chamber 11 it will rise to the level of the upper edge 8 of the notch 7. When there is no ink in the chamber 11 and there is ink in the chamber 10 the ink in the dip tube will rise only to the height of the lower edge of the partition 9. The last of the ink in the stand will gravitate to the recess 5 at the bottom of the dip tube. If the stand is filled full or nearly full there will be little air in the chambers 10 and 11 and therefore only a slight amount of expansion relative to the volume of the dip tube can occur even on a considerable rise in temperature. It will be obvious that when the stand is filled with only enough ink to pour in and fill the chamber 10, practically no ink will flow into the chamber 11. In this case while the chamber 11 is filled with air its expansion will cause no harm because the ink in the dip tube will be below the level of the edge 8 and the air can consequently escape from the chamber 11. If there is sufficient air in the chamber 10 to cause any great amount of expansion the surplus ink will be forced out and can rise in the chamber 11 as Well as in the dip tube up to the level of the edge 8 to the notch 7 In this way it will be seen that the stand may be made large enough to contain a considerable quantity of ink in which case of course there will be but little expansion due to a rise in temperature of the air inside the stand and consequently no danger of the ink over-flowing from th dip tube. In case only a small quantity of ink is filled into the stand it will be confined in the inner chamber 10 and while any expansion of the air in the inner chamber will force out some of the ink from the inner chamber the capacity of the lower part 01" the outer chamber and the dip tube is suflicient to prevent over-flowing.

lVhat I claim is 1. An inkstand comprising a base member and an upper member, the two members having interfitting flanges shaped to provide a dip opening at one side, the upper member having a dependent flange extending from the top of said member downward to near the floor of the base member, the said flange being disposed to inclose a space within the member directly inward from the dip opening to thereby divide the upper member into an inner chamber and an outer chamber intermediate of the inner chamber and the dip tube.

2. An inkstand comprising a base member and an upper member having inter-fitting flanges, the base member having agroove at one side terminating in a recess below the level of the floor of the base member and the upper member having a notch in its lower edge with inclined sides forming in conjunction with the groove of the base member a dip tube and a partition depending from the upper member to a point adjacent the base member and dividing the interior of the stand into an inner and an outer chamber.

3. An inkstand comprising a base member and an upper member having their edges cemented together, the base member being provided with a groove at one side and the upper member being notched at a point to form in conjunction therewith a dip tube and a partition depending from the upper member and forming an inner and an outer chamber, the lower edge of the partition being adjacent the floor of the base member and somewhat below the upper edge of the notch of the upper member.

4. An inkstand comprising a base and an upper member having flanges secured together and having a dip tube formed be tween them and a recess in the base at the lower end of the dip tube and a partition depending from the upper member to a point adjacent the base member and dividing the upper member into an inner and an outer chamber, said recess being beneath the outer chamber.

5. An inkstand comprising a base member provided with an upstanding flange having a groove in one side extending downward and inward on a gradual curve into a recess in the floor of said base member, an upper member having a dependent rim fitting inside the upstanding flange of the base member, the said rim having a notch in its lower edge forming in conjunction with the groove in the base member a dip tube, and the upper member having a flange dependent from the top thereof at a point inside the notch in the rim extending downward to a point adjacent the inner terminus of the recess in the base to thereby divide the upper member into an inner chamber and an outer chamber disposed above the recess in the base and intermediate the inner chamber and the dip tube.

JAMES V]. JACOBUS. Witnesses R. S. ALLYN,

E. BRADFORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

